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(No Model.) 4 sneets-sheen 1. H. O. MALSNESS. AUTOMATIC DUST GOLLEGTOR.

Pmmea Aug. .27, 1895.

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No. 545,167. Patented Aug. 27, 1895.

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(No Model.) 4 Sheets-Sheet 8. H. G. MALSNESS. AUTOMATIC DUST COLLEGTOR.

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H. C. MALSNESS. AUTUMATIG DUsT coLLEoToR.

No. 545,167. Patented Aug. 27, 1895.

UNITED STATns PATENT I'IARVEY O. MALSNESS, OF STRATFORD, CANADA.

AUTOMATIC DUST-COLLECTOR.

SPEGIFICATION forming part of Letters Patent No. 545,167, dated August27, 1895.

Application filed January 3, 1895- Serial No. 533,692. (No model.)

To (ZZ whom it may concern:

Be it known th at I, HAnvnY CHRISTOPHER MALSNESS, of the city ofStratford, in the county of Perth androvince of Ontario, Canada, haveinvented a certain new and Improved Automatic Dust-Collector, of whichthe following is a specification.

The object of my invention is to so construct the collecting-cylinderthat the walls of its chambersp may be formed of a continuous web offabric, to form the cylinder with a central expansion-chamber toseparate the coarse particles of dust and at the same time to give themachine the greatest possible cloth-surface in any given space, toprovide effectual means to cleanse the mes'nes of the cloth of eachsection of dust, and to provide means for discharging the collected dustwithout permitting the egress of dust-laden air; and it consists,essentially, of the construction and arrangement of the parts ashereinafter more specially set for-th, and then definitelyclaimed.

Figure l is a perspcctive view of my improved dust-collector with one ofthe side panels removed to show the dust-collecting cylinder. Fig. 2 isa horizontal cross-section of the same. Fig. 3 is a Vertical sectionthrough the line ab in Fig. 2. Fin. a is a sectional detail showing theair cut-off and the dust-discharge of the machine. Fig. 5 is a detail ofthe upper spider of the cylinder. Fig. 6 is a detail of one of therevolving scrapers. Fig. 7 is a horizontal section showing the cylinderand the closing board. v

In the drawings like letters of reference indicate corresponding partsin the different figures.

A is the casing of the machine, snitably constructed to support thedifierent parts and provided with paneled sides B, the panele beingfilled with a porous fabric.

C is the air-inlet opening into the upper chamber D of the machine.

E is the dust-collecting cylinder, the spin- (ile F of which isjournaled at a a, at the top and bottom of the casing A. (See Fig. 3.)

G is a board or ledge extending over the top of the cylinder E andfitting close to the same, so as to permit the dust-laden air in thechamher D to pass into the center of the cylinder only.

H is a similar ledge fitting close to and clearly seen.

around the upper side of the lower end of the cylinder, so as to preventthe air in the lower part of the casing from passing up around theoutside of the cylinder. This cylinder is composed of a series of rodsI, connecting two spiders J and K, which form the ends of the cylinder.The upper spider is provided with a series of openings, as shown in Fig.5, while the lower spider is provided with the openings shown in Figi.2. Around these rods I a continuous web of fabric L is wound,substantially in the manner shown in Fig. 2, so as to divide thecylinder into a star-shaped expansion- Chamber M and a series ofV-shaped outer chambers N. The shape of these chambers will be bestunderstood by referrng to a few of the rods I by specific letters, as inFig. 2. The inner Chamber is bounded by the series of pairs of rods b b'and the series of rods c, While the outer V-shaped chambers are formedby the fabric passing -consecutively around the rod b, thence around twoof the outer series of rods d, thence around one of the series of rodse, thence back and around two more of the series of rods d, then backaround one of the rods b', and so on. lt will be noticed that the pairof rods b b', being close together, cut off communication between thecentral and outer chambers. The air has access to the eXpansion-chamberM through the openingsf and g, formed in bot-h the upper and lowerspiders. Ingress to the chambers N is obtained only through the lowerspider by means of the openings h j.

From this method of constructing the collecting-cylinder, it will beseen thata very large dust-collecting surface is obtained and that itmay be constructed of a continuous web of fabric without seam or join.Suitable means are used for giving an intermittent revolving motion tothis cylinder, as hereinafter described. Attached to the spindle F onthe cylinder are a pair of four-armed scrapers O and P. (See Fig. 6.)The upper scraper in revolving keeps the board or ledge G cleared ofdust, while the lower scraper P throws the dust collected in the bottomof the casing A into the revolving' Valve Q. This Valve is revolvcd bymeans hereinafter descrihed. On reference to Fig. 4 its constructionwill be A series of chambers R are formed in the valve by means of theL-shaped IOO arms S. rllhis valve Q revolves in a closelyfitting casingT, so that no air or dust can pass between the valve and its casing,suitable openings being of course formed at the top and bottom of thecasing to permit of the ingress and egress of the dust passed through bythe valve. As this valve is continuously revolved the dust is receivedinto the chambers R when at the upper side of the valve and dischargedtherefrom when the said chambers have arrived at the lower side, andthus no dust-laden air is permitted to escape. In Figs. 2 and 4 is alsoseen a triangularlyshaped board U, attached' to the side of the casing,and so shaped as to close each of the outer chambers N as it passes overit.

V is a hoop surrounding the cylinder about the center of its length.

7a is a spring-knocker fast at its lower end to the outside of thecasing of the machine. Its upper end 13', which is preferably of metal,st rikes against a bolt m, passing through a hole in the casing of themachine opposite the hoop V and immediately above the triangular boardU. On reference to Fig. 1, the mechanism for imparting an intermittentrevolving motion to the cylinder E for rotat-ing the Valve Q and forOperating the knocker will be seen.

n is a horizontal shaft suitably journaled on the outside of. the casingand provided with a driving-pulley 0. lines.) The other end of thisshaft is provided With a disk or collar which carries a pin p near itsperiphery, and which pin engages with the end of the knocker k as saidshaft revolves anddraws it away from 'the bolt m, and as the shaftcontinues to revolve the pin passes out of engagement with the knockerand the latter is free to spring back and strike the bolt m, thuscausing the latter to act on the cylinder and vibrate the fabric on thesame. Of course it will be easily seen that this operation is repeatedat each revo lution of the shaft 'n and its pin p.

q is a bevel-pinion fast on the shaft n.

r is a bevel gear-wheel fast on the shaft s, suitablyjournaled on thecasing A. The upper end of this shaft carries a crank-wheel t. A pitmanu is journaled on a pin near the periphery of this wheel.

o is a lever loosely journaled on the upper end of the spindle F of thecylinder E, above the ratchet-Wheel w, which is rigidly connected to thesame.

a' is a spring-dog carried by the lever b. A pitman u and the levero areconnected together by a pin c', so that by the revolution of thecrank-wheel t a vibratory motion is imparted to the lever o. Severalholes are provided in both the level' and the pitman, so that the throwof the lever may be accurately adjusted.

d' is a curved guide which supports the lever o. From this constructionit will be seen that as the leverv moves away from the crankwheel t thatthe dog a' passes over the back (Shown in dotted of the teeth of theratchet-wheel; but as the lever moves toward the crank-wheel theratchet-wheel is rotated and With it the cyl inder E, this motion beingsufficient to move the cylinder the width of one of the outer chambersN.

e' is a sprocket-wheel fast on the shaft 'n and connected by a sprocketchain to the sprocket-wheel f' on the spindle g' of the valve Q.

Having thus described the construction of my invention, I Will briefiyexplain its operation. The dust-laden air enters the upper chamber Dofthe machine through the opening O, thence passes through the openings fand gin the upper spider J, and thence into the expansion-chamber M.From thence it passes through the openings and g in the lower spider K,through the bottom chamber of the machine, and up through the openingsh, i, andj into the outer chambers N, thence through the walls of thesechambers and out through the porouspanels of the doors. Theexpansion-chamber M, into which the air is first directed, will separatethe coarser particles of the dust, which will fall directly to thebottom of the machine, while the finer particles of dust will rise intoand be depesited on the cloth surface of the outer chambers N. When oneof these chambers stops above the triangular board U, it is sharplyagitated by the knockerk and the dust shaken to the bottom onto theboard u, whence it is swept as the cylinder again revolves. As eachchamber in turn stops over this board and is agitated by the knocker,all the mesh es of the cloth are kept properly cleaned. The dust fallinginto the bottom of the machine is swept by the revolving scraper P intothe valve Q, by means of which it is removed from the machine.

From the construction 'and operation of my machine it will be seen thatI have provided a machine. in which the cylinder has a very greatcapacity for its size, and that by first introducing the dust-laden airinto the expansion-chamber in the center of the machine the coarserparts of the dust are separated, leaving the outside cells to operate onthe material which is finer and more difficult to separate, and that byimparting an intermittent motion to the cylinder and shutting out theair from one cell atatime the knocker is enabled to effectually jar offthe dust and keep the meshes of the cloth clean, and that by the use ofthe revolvingvalve constructed as described the collected dust may bedischarged without allowing the air to escape. It should be mentionedthat means may be provided, if necessary, to fasten the edges of thecloth of the cylinder to the upper and lower spiders.

What I claim as my invention is- 1. In a dust col1ector,a cylindercomprising two spiders, a series of rods connecting said spiders, and acontinuous web of fabric passing around said rods and dividing the spaceIOC IZO

into an inner chamber and a series of outer chambers; the outside ofboth the inner and onter chambers being formed by said webbing,suhstantiallyas desoribed.

2. In a dust collector, a cylinder comprising two spiders, a series ofrods connecting said spiders, and a continuous web of fabric passingaround said rods and dividing the space into an inner charnber and aseries of outer chambers, one of said spiders affording communication tothe central or inner chaxnber only, and the other Spider constructed andarranged to afiord communication to all of the series of onter ohamhers,substantially as described.

3. In a dust collector, a cylinder comprising upper and lower spiders,three series of rods conneoting said spiders, and a continuous Web offabric passing from rod to rod and thns dividing the space between thespiders into a substantially star-Shaped inner chamber M and into aseries of outer ohainhers surrounding the chamber M, all of saidchambers being snrronnded by the fabric, snbstantially as described.

et. In a dust eollector, a rotatable cylinder comprising a centralcloth-Walled chamber and a series of cloth-walled outer chambers, incombination with a casing constructed and arranged to direct thedust-laden air into said central Chamber and thence up into said outerchambers, a triangnlar board constructed and arranged to successivelyclose each outer chamber, means, substantially as described,

arranged to revolve the said cylinder intermittently and means arrangedto agitate the Chamber so ont off, snbstant-ially as and for the pnrposespeoified.

5. In a dust oollectorJ the combination of the following elements-thecasing' A containing a cylinder E connected with a spindle F,ratchet-wheel w on said spindle, the lever i) carring a spring-dog a'arranged to act on said ratchet-Wheel, a crank-wheelf a pitman uconnecting said vlever o and crankwheel t, a bevel gear wheel a", ashaft s connecting said Wheels t and fr, a driving-shaft n carrying apinion q` meshing' with said wheel rr, a knocker k, and a pin having aconnection with shaft n, and arranged to opcrate said knooker, as saidshaft revolves, snbstantially as and for. the pnrpose specified.

6. In a dust collector, having a cylinder O provided with inner andouter chambers, the

'combination of a casing provided With an upper chamber D, having aledg'e G extending around it, arranged to allow the dust to enter theinner chamb'er only, the cylinder spindle F, means for revolving thesaid scraper and spindle, and the scraper G arranged to scrape the dustoff of the ledge G into the inner chamber, snbstantially as and for thepnrpose specified.

Stratford, December 25, 1894-.

HARVEY C. MALSNESS. In presence of- THos. GILLESPIE, O. E. ToLToN.

